Bug#815050: logs errors about ibus-daemon and GSystem on startup

[Daniel Pocock]

Package: gnome-shell
Version: 3.14.4-1~deb8u1

When I start gnome-shell from a terminal window, some errors are logged:

$ gnome-shell
Gjs-Message: JS LOG: Failed to launch ibus-daemon: Failed to execute
child process "ibus-daemon" (No such file or directory)

(gnome-shell:23374): Gjs-WARNING **: JS ERROR: Exception in callback for
signal: startup-complete: Error: Requiring GSystem, version none:
Typelib file for namespace 'GSystem' (any version) not found


Do these mean something is missing from the system?